Reversibly associated rotary pump and valve device



Oct. 4, 1938. P. c. PETERSEN REVERSIBLY ASSOCIATED ROTARY PUMP AND VALVE DEV'ICE Filed Oct. 24, 1935 1; Chg

' 2 2 is? C. Petersen,

v (Ittorneg 2 Sheets-Sheet l 3nventor Oct. 4, 1938. P. c. PETERSEN REVERSIBLY ASSOGIAI' IED ROTARY PUMP AND VALVE DEVICE Filed Oct. 24, 1955 2 Sheets-Sheet 2 3nnentor Peder Cij ezizrsen,

BB i M Patented bet. 4, 1 938 i PATENT .OFFICE REVERSIBLY ASSOCIATED ROTARY PUltIP AND VALVE DEVICE Peter C. Petersen, Cedar Viking Pump Compa corporation of Delaware Falls, Iowa,'assignor to Cedar Falls, Iowa, at

Application October 24, 1935, erial No. 46,536

; 1 Claim;

My invention relates to improvements in reversibly associated rotary pumps and valve devices,and the principal object of my improvements is to provide a rotary pump with a removable 5 valve chamber which latter contains-the inlet and outlet ports forthe pump, and the ,pump and valve chamber being respectively shaped for re-; versal of either relative to the other, for convenience in either case in emplacing the combined structures in any of various locations to conform thereto and without other changes in the pump and valve. Another object of my improvement is to shape the valve chamber with like opposite faces having alike mating faces for an outer removable interchangeable closure, and the pump body having an end seat adapted to receive either of said valve mating faces when either the pump or the valve chamber are relatively reversed in position to effect the above mentioned first object.

These objects I have accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawings. Y

Fig. 1 is a longitudinal axial section of the ad justably connected and seated pump and valve chamber according to my invention, taken on the broken line I-I of Fig'. 2. Fig. 2 is a transverse section of the head part of the pump containing the rotor chamber, taken on the broken line 2--2 of Fig. 1 looking-in the direction indicated by the arrow. Fig. 3 is a transverse section on the line, 3-3 of Fig. 4, and Fig. 4 a reduced longitudinal section of the pump and valve chamber on the arrows. 1

I have shown herein a preferred form of my said invention of reversibly associated pump and valve chamber, including the interior devices of both for attaining their respective -objects,.but it is to be understood that this invention pertains to said association of pumpand its valve chamber generally as being each reversible relative to the other according to the requirements of the emplacements, and that the special pump construction and that of the particular passageways of the valve chamber may be considerably varied without departing from this present invention.

The numeral II denotes the widened forward part of a pump body having a rearwardly directed and diminished integral bearing lie of cylindric axially hollowed shape with removable end cap 26 apertured to receive therethrough a bushing 28 seating the rear portion of a rotor stem 2I to project rearwardly therefrom. The pump part II contains a central rotor chamber II seating rotatably a rotor I6 fixed on the stem 2 I, the rotor having inwardly directed crown teeth to mesh with spur teeth on an idler 20 in said chamber, with the idler rotatable Fig. 2)- projecting inwardly from a flanged cap I2 secured by screws I3 to and to close said chamber. A crescental body I4 is also fixed upon the inner face of the cap I2 closing an interior space between the rotor and idler to prevent a by-pasl0 sage therebetween to opposite outlet passage I9I9a from an inlet passage l8-I8a in the part II. a

The forward part of the stem 2I traverses a bushing 22 in the hollow of the pump part Ila. The flanged and beveled ring 2'! is seated upon the rear bushing 28 for limited longitudinal adjusts ments therealong, the forward end of the ring engaging. a sealing ring on said stem and the sealing ring engaging the rear closed wall of a forwardly cupped member 25 engaging the rear end of a compression spring 24 on said stem for adjustably compressing the spring against a fixed ring 23 on said stem. The above structures are not specifically claimedherein.

The numeral I denotes the valve chamber shown in Figs. land 3 in detail. and removably associated with the pump head II. This chamber has like forward and rear parallel faces having like central depressed circular seats 43a, and 30 43, in either of which may be removably fitted a circular closure plate 2\sec'ured by screws 3. This closure plate is to close'the forwardly directed depressed seat 43a-in use. The forward end face 35 the line 4-4 of Fig. 3, both figures as indicated byof the pump chamber I I is shaped to fit the rear- 35 wardly disposed depressed seat numbered 43, which, however is as stated the counterpart of the forward seat 43a. The screws 3 also removably fasten the valve chamber I to the pump head II. A closed hollow 29 in the chamber I receives the forward portion of the flanged cap I2 when the chamber I is secured in place on the pump. Referring to said Fig; 3, the chamber I has oppositely and diagonally disposed inlet and outlet ports '4 and 39 respectively. The inlet port 4 is 45 in communication with a cavity 1 which in turn is in communication with the pump inlet port I8. A depending cylindrical reticulated sieve G in the cavity I has its upper end. traversing a seat in a chamber in communication with the 50 inlet port 4, to fllter entering liquid before delivery to the pump chamber, and a rock-valve 5 having angularly disposed two-way ports may be rocked to open or close the communication of the inlet port 4 with the cavity 1 by way of said sieve. 55

on a fixed pin 30 (see 5 2 r A screw plug 31 closes'the chamber seating said rock-valve for clean-out 'or valve removal purposes.

The valve chamber has an innerpartition 36 around the said central hollow 29. Similarcavities l and 3 are at opposite sides of .said partition. The partition 36 at the top has a web part 3611 closing communication between'it and said cavities, this part having a threaded seat closed by a removable screw body 36b, which when re--.

moved allows cleaning or flushing of both cavities when necessary, and made accessible by a threaded seat in the top of the chamber I having .a screw closure 42. The partition 3'6 has a cross web at the bottom separating said cavities I and 8. The bottom wall of the valve chamber has a threaded port usually closed by a headless removber 8 todischarge any seepage of liquid past the body of the valve 32 to any conduit to conduct it to the container which supplies the port 4. The

lower part of the valve 32has a flat end with a depending central conical valve-head which is seated in a conical seat leading into said outletport 39. The port 33 may have tubular connections with an oil-burner nozzle not shown, or otherwise. The cavity 33 which is below said "valve seat for the valve-body 32, communicates between the outlet port IQ of the pump l l and said outlet port 39 of the valve chamber l.

' The above description of the specific communications between the inlet port 4 of the valve chamber l and the outlet port 39 by way of the pump chamber II shows pumping means not claimed herein, and which may be varied without departing from my invention, which pertains solely to the respective reversibilities of the pump body and its removable valve chamber as described. As best shown in Fig. 2, the valve chamber I is adapted to be reversed in position afterits removal from the pump body and the transposition of its front closure 2 to the opposite depressed seat 43a or 43 as the case may be, and

then re-se'cured by said screws 3 which hold both the closure 2 to the valve chamber, and the valve chamber l to the pump body.

In some of the uses of the pump and its'valvechamber, it is found desirable to position theformer, as when serving an oil-burning device: in

a space restricted in certain directions,-and where when so located the valve chamber must be reversed in position relative'to the pump body for suitable clearance from interfering objects. In other cases, it is necessary to reverse the pump chamber relative to the valve chambenand this is possible with my invention without affecting flattened end of the.valve 32 and upon the conical point thereof upwardly, and in case of a variation of such speed of rotation, the. pressure of permitting, as necessary, the valve chamber being reversed and its cap 2 re-seated relatively to the pump. body, or in another case, when the pumpbody is reversed in position with regard to the valve chamber, allows, without need for reversing the direction of rotation of the rotor IS, the

functioning of the pump conveniently in any desired locations or to avoid adjacent impediments;

I claim:

In combination, a rotary pump chamber having a widened end face with inlet and outlet channels, leading respectively into and out of the rotor chamber by way of said end face, a delivery head for the pump chamber having in opposite faces like shaped recessed seats which fit and seat said widened end face thereof, the delivery head having therein only inlet and outlet channels leading to and from the inlet and outlet channels of the rotor chamber, an imperforate closure shaped to fit either seat of the delivery head when the latter is reversed in position to reverse the positions of the inlet and outlet channels of the head, and means for securing both the delivery head and said closure when assembled to the pump chamber.

PETER C. PETERSEN. 

